It is an artificial airway placed in the throat cavity, using a balloon to seal the esophagus and throat cavity, and ventilating through the laryngeal cavity. It avoids tracheal intubation, but is more effective than using a mask.
The ventilation tube is bendable. Compared with ordinary laryngeal masks, the airway is less likely to become angled, thereby reducing the risk of airway obstruction. It is mainly used for mechanical ventilation in eye, nose, throat, head and oral surgery.
The main feature is the improvement of the ventilation mask and the addition of the drainage tube. After insertion, two sealed chambers are formed that are connected to each other. One is the ventilation mask to connect the throat seal and the ventilation tube, and the other is the ventilation mask. The front end seals the opening of the upper esophageal sphincter and communicates with the drainage tube. Compared with ordinary laryngeal masks, the insertion difficulty is similar, but positive pressure ventilation is safer and more effective, and the incidence of aspiration is lower. At the same time, the suction tube can be placed through the drainage channel, and it is easy to find if the position is incorrect. Therefore, its clinical application range is wider. In addition to being suitable for limb surface surgeries, it is also suitable for laparoscopic abdominal surgeries.
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